公开(公告)号：US6152580A

公开(公告)日：2000-11-28

申请号：US24481

申请日：1998-02-17

申请人： Robert Babuka ,  Jennifer M. Cohen ,  Raymond G. Greene ,  Dean W. Skinner ,  Boris Yost

发明人： Robert Babuka ,  Jennifer M. Cohen ,  Raymond G. Greene ,  Dean W. Skinner ,  Boris Yost

IPC分类号： G02F1/1333 ,  G02F1/13357 ,  G09F13/04 ,  F21V11/06

CPC分类号： G02F1/133524 ,  G02F1/1336 ,  G09F13/0409 ,  G02F1/13336 ,  G02F2001/133607

摘要： The present invention features an apparatus and method for collimating light for use with a tiled, flat-panel display having a seamless appearance (i.e., having visually imperceptible seams). A novel, multi-cell, collimation lattice is placed behind the bottom mask of the tiled, flat-panel display assembly, but in front of an illumination source. The lattice is formed from a thin, non-reflective material, so that the acceptable light passing through the lattice is not "blocked", but the unwanted (off-axis) light impinges upon the lattice cell walls and is absorbed.

摘要翻译： 本发明的特征在于一种用于准直光的装置和方法，用于具有无缝外观（即，具有视觉上不可察觉的接缝）的平铺平板显示器。 一个新颖的多单元格准直格子放置在平铺的平板显示器组件的底部掩模的后面，但在照明源的前面。 晶格由薄的非反射材料形成，使得通过晶格的可接受的光不被“阻挡”，但是不想要的（离轴）的光撞击在晶格单元壁上并被吸收。

公开(公告)号：US06697042B1

公开(公告)日：2004-02-24

申请号：US09721819

申请日：2000-11-27

申请人： Jennifer M. Cohen ,  Raymond G. Greene ,  Dean W. Skinner ,  Douglas H. Strope

发明人： Jennifer M. Cohen ,  Raymond G. Greene ,  Dean W. Skinner ,  Douglas H. Strope

IPC分类号： G09G336

CPC分类号： G02F1/133602 ,  G02B6/0068 ,  G02F2001/133607

摘要： A large, efficient, high power collimated backlight assembly has a highly reflective, substantially closed, thin rectangular light cavity containing highly reflective surfaces and one or more light sources. One of the large faces of the cavity is a light exit plate which contains a transmissive, light collimating structure. The cavity side of the collimating structure includes a highly reflective white planar structure containing an array of circular apertures with minimal sidewall absorption. The apertures are centered on the optical axis and located near the focal distance of a closely packed array of hemispherical or spherical lenses located on the outer surface of the collimating structure. Light rays are trapped between the highly reflective surfaces of the cavity, light sources, and aperture walls, until they enter the lenses, which output the majority of rays that enter in a collimated beam. The backlight assembly is advantageously used for transmissive type electro-optical displays, especially those whose performance is enhanced by efficient collimated light, such as seamless tiled liquid crystal displays.

摘要翻译： 大型高效率的高功率准直背光组件具有高反射性，基本封闭的薄矩形光腔，其包含高反射面和一个或多个光源。 空腔的一个大面是含有透射的光准直结构的光出射板。 准直结构的空腔侧包括高反射性白色平面结构，其包含具有最小侧壁吸收的圆形孔阵列。 这些孔以光轴为中心，位于靠近准直结构外表面的半球形或球面透镜阵列的焦距附近。 光线被捕获在空腔，光源和孔壁的高反射表面之间，直到它们进入透镜，其输出进入准直光束的大部分光线。 背光组件有利地用于透射型电光显示器，特别是那些通过有效的准直光增强其性能的电光显示器，例如无缝拼接液晶显示器。